.NET8\u3067\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u308b\u3001C#12\u306e\u65b0\u6a5f\u80fd\u3092\u8abf\u3079\u3066\u307f\u305f\u3002<\/p>\n\n\n\n
\u2460\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u5f0f
\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u5f0f\u306f\u914d\u5217\u3084List\u7b49\u306e\u521d\u671f\u5316\u3084\u4ee3\u5165\u306a\u3069\u306b\u4f7f\u7528\u3067\u304d\u308b\u3002
\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u611f\u3058\u3002<\/p>\n\n\n\n
int[] iary_old = new int[] { 1, 2, 3, 4 };\t\/\/ \u5f93\u6765\nint[] iary_new = [ 1, 2, 3, 4 ];\t\/\/ C#12\u4ee5\u964d\n\nList<string> slst_old = new List<string>() { "Hello" , "World" };\t\/\/ \u5f93\u6765\nList<string> slst_new = [ "Hello" , "World" ];\t\/\/ C#12\u4ee5\u964d<\/code><\/pre><\/div>\n\n\n\nnew\u3068\u521d\u671f\u5316\u3092\u4e00\u7dd2\u306b\u884c\u3046\u30b7\u30f3\u30bf\u30c3\u30af\u30b9\u30b7\u30e5\u30ac\u30fc\u3060\u306d\u3002<\/p>\n\n\n\n
\u307e\u305f\u3001\u30b9\u30d7\u30ec\u30c3\u30c9\u6f14\u7b97\u5b50”..”\u3068\u3044\u3046\u3082\u306e\u304c\u4f7f\u7528\u3067\u304d\u308b\u3002\u3053\u308c\u3092\u3001\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u306e\u524d\u306b\u3064\u3051\u308b\u3068\u3001\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u306e\u8981\u7d20\u306b\u7f6e\u304d\u63db\u308f\u308b\u3002<\/p>\n\n\n\n
> int[] a = [1,2,3];\n> int[] b = [4,5,6];\n> int[] c = [..a,..b];\n> c\nint[6] { 1, 2, 3, 4, 5, 6 }<\/code><\/pre><\/div>\n\n\n\n\u2461\u30e9\u30e0\u30c0\u5f0f\u30d1\u30e9\u30e1\u30fc\u30bf\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u5024
\u30e9\u30e0\u30c0\u5f0f\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u306b\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u3063\u305f\u3002<\/p>\n\n\n\n
var PlusN = ( int Value, int Addition=1 ) => Value + Addition;\n\nConsole.WriteLine($"PlusN(10)={PlusN(10)}");\nConsole.WriteLine($"PlusN(10,2)={PlusN(10,2)}");\n\/*\t\u7d50\u679c\n\tPlusN(10)=11\n\tPlusN(10,2)=12\n *\/\n\/\/ NG\u30d1\u30bf\u30fc\u30f3\nFunc<int,int,int> PlusN = ( Value, Addition=1 ) => Value + Addition;\n\/\/ error CS9098: \u6697\u9ed9\u7684\u306b\u578b\u6307\u5b9a\u3055\u308c\u305f\u30e9\u30e0\u30c0\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc 'Addition' \u306b\u65e2\u5b9a\u5024\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\nFunc<int,int,int> PlusN = ( int Value, int Addition=1 ) => Value + Addition;\n\/\/ warning CS9099: \u30d1\u30e9\u30e1\u30fc\u30bf\u30fc 2 \u306e\u30e9\u30e0\u30c0\u3067\u306e\u65e2\u5b9a\u5024\u306f '1' \u3060\u304c\u3001\u30bf\u30fc\u30b2\u30c3\u30c8\u30c7\u30ea\u30b2\u30fc\u30c8\u578b\u3067\u306f '<missing>' \u3067\u3059\u3002<\/code><\/pre><\/div>\n\n\n\n\u30d1\u30e9\u30e1\u30fc\u30bf\u306e\u578b\u3092\u660e\u793a\u7684\u306b\u6307\u5b9a\u3057\u306a\u3044\u3068\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u306e\u8a2d\u5b9a\u306f\u51fa\u6765\u306a\u3044\u3088\u3046\u3060\u3002
\u307e\u305f\u3001\u578b\u3068\u3057\u3066\u5f15\u6570\u306e\u6570\u3092\u6307\u5b9a\u3057\u3066\u3057\u307e\u3046\u3068\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u306b\u8b66\u544a\u304c\u51fa\u3066\u3001\u5b9f\u884c\u6642\u306b\u30c7\u30d5\u30a9\u30eb\u30c8\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u6307\u5b9a\u3057\u306a\u3044\u3068\u3001\u5b9f\u884c\u6642\u30a8\u30e9\u30fc
CS7036: ‘arg2’ \u306e\u5fc5\u8981\u306a\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc ‘Func’ \u306b\u5bfe\u5fdc\u3059\u308b\u7279\u5b9a\u306e\u5f15\u6570\u304c\u3042\u308a\u307e\u305b\u3093
\u3068\u306a\u3063\u3066\u3057\u307e\u3046\u3002<\/p>\n\n\n\n
\u2462\u30d7\u30e9\u30a4\u30de\u30ea\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf
record\u578b\u3067\u306f\u4ee5\u524d\u304b\u3089\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u305f\u304c\u3001class\u3084struct\u3067\u3082\u4f7f\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u3063\u305f\u3002<\/p>\n\n\n\n
public class Person(string Name, string Mail, DateTime Birthday) {\n\tpublic string Name { get; } = Name;\n\tpublic string Mail { get; } = Mail;\n\tpublic DateTime Birthday { get; } = Birthday;\n}<\/code><\/pre><\/div>\n\n\n\n\u4ed6\u306b\u3082\u3044\u304f\u3064\u304b\u65b0\u6a5f\u80fd\u304c\u3042\u308b\u306e\u3060\u304c\u3001\u3059\u3050\u306b\u4f7f\u3048\u305d\u3046\u306a\u306e\u306f\u3053\u308c\u3050\u3089\u3044\u304b\u306a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
.NET8\u3067\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u308b\u3001C#12\u306e\u65b0\u6a5f\u80fd\u3092\u8abf\u3079\u3066\u307f\u305f\u3002 \u2460\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u5f0f\u30b3\u30ec … \u7d9a\u304d\u3092\u8aad\u3080